# Oilshale mine 01

- By: Peeter paaver
- Date: Taken on 20 November 2019
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Oilshale_mine_01.jpg)
- Rights: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/8/84/Oilshale_mine_01.jpg/1920px-Oilshale_mine_01.jpg
- Who can see it: Tweens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Geological fieldworks, underground in the Estonian oil shale mine to study the variable mineralogical and chemical composition and microstructure in the different layers of the oil shale profile